Finding the Fourth Proportional to 115,291.71, 171,791.41 and 102,715.09
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Solution
The fourth proportional to 115,291.71, 171,791.41 and 102,715.09 is: 153,051.51
Step by Step Solution
- Step 1: Write the proportion equation
115,291.71 : 171,791.41 = 102,715.09 : x - Step 2: Convert to fraction form
115,291.71/171,791.41 = 102,715.09/x - Step 3: Cross multiply
115,291.71x = 171,791.41 × 102,715.09 - Step 4: Simplify right side
115,291.71x = 17,645,570,139.38 - Step 5: Solve for x
x = 17,645,570,139.38/115,291.71 - Step 6: Final answer
x = 153,051.51
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.